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nLab > Latest Changes: mixed unitary quantum channel

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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeSep 28th 2023

    starting some minimum, for completeness

    v1, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeSep 28th 2023
    • (edited Sep 28th 2023)

    added (here) the statement that every unital channel on a single qbit is mixed unitary.

    This is attributed by Müller-Hermes & Perry 2019 (inside the proof of Cor. 1.4) to Ruskai, Szarek & Werner 2002, though it’s not terribly explicit in the latter article.

    diff, v2, current

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